Certificate of Pick Authentication #370 · Saturday Racing

Verifying in your browser…

Hashing the pick's canonical bytes with your device's SHA-256.

This is to certify that the pick recorded below was cryptographically committed to Saturday Racing's transparency ledger before the race ran. The commitment is a SHA-256 leaf hash of the canonical bytes; any subsequent tampering breaks the hash and this certificate turns red. The check runs on the reader's own device — no trust required from us.

The Pick

Horse: Regal Renaissance
Race: Market Rasen · 5 July 2026 · 16:00
Product: Top Rated Today (Sly Man) · Top Rated — Top OR Ratings
Advised odds: 15/8
Confidence: High (raw 118)
Prompt version: top_rated_v1_2026-07-08
Predicted at: 2026-07-08T22:13:45.583342+01:00

Cryptographic Seal

Leaf hash: 56e59500e1e5acf578b0fdc04eb5498c8a418638a06bb0d57de0e83198c0d015
Your browser: …
Batch: 13 July 2026 · 709 leafleaves · inspect batch →
Merkle root: eba1d4cb07b18df5f26ea6211dae664c2a8d9ce7bdcd95a3a7d9da03ed6cf62b
Your browser walk: …
On-chain: Off-chain verified. Anchoring on-chain is a separate, gas-gated step.

Technical appendix — canonical bytes & Merkle proof

The canonical bytes

This is the exact JSON that was hashed. Copy it, run sha256sum on it yourself, and you should get the leaf hash above.

{"attribution":{"pick_source":"story_score","prompt_version":"top_rated_v1_2026-07-08"},"committed_at":"2026-07-13T21:10:27Z","issuer":"saturday-racing.com","predicted_at":"2026-07-08T21:13:45Z","product":"top_rated","product_lane":"ratings_or","race":{"course":"Market Rasen","external_id":"rac_11987521","internal_id":2496,"race_date":"2026-07-05","race_time":"16:00"},"schema":"sr-pick-v1","selection":{"advised_odds":"15/8","confidence_final":"High","confidence_raw":"118","horse":"Regal Renaissance","position_claim":"win"}}

The Merkle proof

Each hop is a sibling hash. Your browser walks these from the leaf up to the root, hashing pairs at each step.

#	Position	Sibling hash
1	left	562aac5714a8e7ead303ce50fa9c8f0a41ba0b5e9f591bb0a209dd98861f8396
2	right	9f1033d3aa9f72929a139694b44145b5955713f06ee18abe6ec83987f0ec0adb
3	right	30b093feb5ff0aa588da5feaec5b7e5425d4911af4c8430515727c5bb5d9f79e
4	right	4c8cf19010214392736ed33e28775f64612b76452f601e75bf4de8b37f0d55f7
5	left	9c35144997c1f95839a65dfc94dc3a1139864f7417424a4c114d696b14c74df8
6	left	fc52f76fefc833e1107b03796f834d4ba1336aeb1778053c068d9688bda96b1d
7	left	abd1f2af8516869713aed81c9f26f27b73cfb533f542009e428008b662810a09
8	left	258ce92dcccd21d1d3bbbb39ac789ad1349e3db2aadbe660b7ed0a8637d8148f
9	right	a37bae6f6b56af99833b4e131855bb087cd4e3a90918a4dfd59d83ac87f8f303
10	right	e25c8d2b935f54f140bee5f6c7b02a176294b2ed6153543d94a92504abeba294

Server-reported status: off_chain_verified · Ledger overview at /verify/